Fix Jupyter Lite serve instruction (#363)

Author: mcbarton

CONTRIBUTING.md

@@ -145,21 +145,16 @@ echo "Running test_xeus_cpp in Google Chrome"
 python $BUILD_PREFIX/bin/emrun.py --browser="google-chrome" --kill_exit --timeout 60 --browser-args="--headless --no-sandbox"  test_xeus_cpp.html
 ```
 
-To build Jupyter Lite with this kernel without creating a website you can execute the following
+To build and test Jupyter Lite with this kernel locally you can execute the following
 ```bash
 micromamba create -n xeus-lite-host jupyterlite-core=0.6 jupyter_server jupyterlite-xeus -c conda-forge
 micromamba activate xeus-lite-host
-jupyter lite build --XeusAddon.prefix=$PREFIX \
+jupyter lite serve --XeusAddon.prefix=$PREFIX \
                    --XeusAddon.mounts="$PREFIX/share/xeus-cpp/tagfiles:/share/xeus-cpp/tagfiles" \
                    --XeusAddon.mounts="$PREFIX/etc/xeus-cpp/tags.d:/etc/xeus-cpp/tags.d" \
                    --contents README.md \
                    --contents notebooks/xeus-cpp-lite-demo.ipynb \
                    --contents notebooks/smallpt.ipynb \
                    --contents notebooks/images/marie.png \
                    --contents notebooks/audio/audio.wav
-```
-
-Once the Jupyter Lite site has built you can test the website locally by executing
-```bash
-jupyter lite serve --XeusAddon.prefix=$PREFIX
-```
+```

README.md

@@ -157,11 +157,11 @@ echo "Running test_xeus_cpp in Google Chrome"
 python $BUILD_PREFIX/bin/emrun.py --browser="google-chrome" --kill_exit --timeout 60 --browser-args="--headless --no-sandbox"  test_xeus_cpp.html
 ```
 
-To build Jupyter Lite with this kernel without creating a website you can execute the following
+To build and test Jupyter Lite with this kernel locally you can execute the following
 ```bash
 micromamba create -n xeus-lite-host jupyterlite-core=0.6 jupyter_server jupyterlite-xeus -c conda-forge
 micromamba activate xeus-lite-host
-jupyter lite build --XeusAddon.prefix=$PREFIX \            
+jupyter lite serve --XeusAddon.prefix=$PREFIX \            
                    --XeusAddon.mounts="$PREFIX/share/xeus-cpp/tagfiles:/share/xeus-cpp/tagfiles" \
                    --XeusAddon.mounts="$PREFIX/etc/xeus-cpp/tags.d:/etc/xeus-cpp/tags.d" \
                    --contents README.md \
@@ -171,11 +171,6 @@ jupyter lite build --XeusAddon.prefix=$PREFIX \
                    --contents notebooks/audio/audio.wav
 ```
 
-Once the Jupyter Lite site has built you can test the website locally by executing
-```bash
-jupyter lite serve --XeusAddon.prefix=$PREFIX
-```
-
 ## Trying it online
 
 To try out xeus-cpp interactively in your web browser, just click on the binder link:

docs/source/InstallationAndUsage.rst

@@ -126,13 +126,13 @@ To do this on Ubuntu x86 execute the following
     echo "Running test_xeus_cpp in Google Chrome"
     python $BUILD_PREFIX/bin/emrun.py --browser="google-chrome" --kill_exit --timeout 60 --browser-args="--headless --no-sandbox"  test_xeus_cpp.html
 
-To build Jupyter Lite with this kernel without creating a website you can execute the following
+To build and test Jupyter Lite with this kernel locally you can execute the following
 
 .. code-block:: bash
 
     micromamba create -n xeus-lite-host jupyterlite-core=0.6 jupyter_server jupyterlite-xeus -c conda-forge
     micromamba activate xeus-lite-host
-    jupyter lite build --XeusAddon.prefix=$PREFIX
+    jupyter lite serve --XeusAddon.prefix=$PREFIX
                        --XeusAddon.mounts="$PREFIX/share/xeus-cpp/tagfiles:/share/xeus-cpp/tagfiles" \
                        --XeusAddon.mounts="$PREFIX/etc/xeus-cpp/tags.d:/etc/xeus-cpp/tags.d" \
                        --contents README.md \
@@ -141,12 +141,6 @@ To build Jupyter Lite with this kernel without creating a website you can execut
                        --contents notebooks/images/marie.png \
                        --contents notebooks/audio/audio.wav
 
-Once the Jupyter Lite site has built you can test the website locally by executing
-
-.. code-block:: bash
-
-    jupyter lite serve --XeusAddon.prefix=$PREFIX
-
 Installing from conda-forge
 ===========================